O'Fallon, Illinois

City

Overview

Place Name: O'Fallon
Place Type: City
State: Illinois
FIPS Code: 1755249
State FIPS: 17
Place FIPS: 55249

Geography

Land Area: 15.81 sq mi
Water Area: 0.11 sq mi
Total Area: 15.92 sq mi
Latitude: 38.600006
Longitude: -89.915402